M5 POWER BANK with IP5108



  • Under this link IP3506 AUTOMATIC STANDBY was discussed the M5 Power Bank module.
    Here is the inspiration from the realization of this module:

    1. Schema
      0_1531661662908_M5Stack_Power_Bank_V24.png

    2. BOM
      0_1531661684833_M5_Power_Bank_BOM.png

    3. PCB for hand soldering
      0_1531661724055_M5_Power_Bank_PCB.png

    4. Case - 3D printed
      0_1531661759214_M5_Power_Bank_Case.png

    5. Final functional module
      0_1531661809513_M5_Power_Bank_Module.png

    M5 Power Bank with IP5108 fully replaces M5 BOTTOM:

    • The module also contains a magnet (big one)
    • External M-bus (fully) is on the right side (female 2x15)
    • LED indicator and On/Off button is on the left side
    • LED functionality can be selected (5V, On/Off=IRQ, GPIO00 or GPIO01 software control)
    • On/Off button functionality can also be programmed thru IP5108 registers

    WARNING:
    The module is designed to be connected directly to the M5 CORE because the components enter the space of M5 CORE!



  • Nice desing jikuch.... I am trying to adapt it for a solar powered system, but am unable to find information in english about the ip5108 i2c register.
    Could you help me?
    Thanks



  • IP5108 I2C description:

    7-bit slave address IP5108 is 0x75 (byte with write bit = 0xEA; byte with read bit = 0xEB)
    400 Kbps speed of I2C supported
    1 byte data = 8-bit data (bits from 7 to 0)

    WRITE Arduino example:
    Wire.beginTransmission(0x75);
    Wire.write(register_address_byte);
    Wire.write(data_byte);
    Wire.endTransmission();

    READ Arduino example:
    Wire.beginTransmission(0x75);
    Wire.write(register_address_byte);
    Wire.endTransmission();
    Wire.requestFrom(0x75,1);
    data_byte = Wire.read();

    REGISTERS:

    1. Enable / disable functions:
    SYS_CTL0 = 0x01:

    • bit 4 (read/write): 0 = disbale / 1 = enable (1 = after reset) detection ??? (I do not understand.)
    • bit 3 (read/write): 0 = disbale / 1 = enable (1 = after reset) light
    • bit 2 (read/write): 0 = disbale / 1 = enable (1 = after reset) booster
    • bit 1 (read/write): 0 = disable / 1 = enable (1 = after reset) charger

    SYS_CTL1 = 0x02:

    • bit 1 (read/write): 0 = disable / 1 = enable (1 = after reset) auto-standby
    • bit 0 (read/write): 0 = disable / 1 = enable (1 = after reset) auto ??? (I do not understand.)

    SYS_CTL3 = 0x03:

    • bit 5 (read/write): 0 = disable / 1 = enable (1 = after reset) off by button

    2. General setup features:
    SYS_CTL2 = 0x0C:

    • bits 7-3 (read/write): (01010 = after reset) auto-standby current limit as multiple 12 mA

    SYS_CTL4 = 0x04:

    • bits 7-6 (read/write): (10 = after reset) time for auto-standby: 00=8s, 01=16s, 10=32s, 11=64s

    SYS_CTL3 = 0x03:

    • bits 7-6 (read/write): (01 = after reset) time for recognition button press: 00=1s, 01=2s, 10=3s, 11=4s

    SYS_CTL5 = 0x07:

    • bit 1 (read/write): (0 = after reset) control of light by button: 0=press, 1=double click
    • bit 0 (read/write): (0 = after reset) off by button: 0=double click, 1=press

    3. Charging setup features:
    CHARGER_CTL1 = 0x22:

    • bits 3-2 (read/write): (01 = after reset) VOUT undervoltage limit during chargig: 00=4.53V, 01=4.63V, 10=4.73V, 11=4.83V

    CHARGER_CTL2 = 0x24:

    • bits 6-5 (read/write): (00 = after reset) battery type = charging voltage: 00=4.2V, 01=4.3V, 10=4.35V
    • bits 2-1 (read/write): (10 = after reset) overcharging of charging: 00=0mV, 01=14mV, 10=28mV, 11=42mV

    CHG_DIG_CTL4 = 0x25:

    • bits 4-0 (read/write): (10110 = after reset) charging current setting [A]:
      b0 x 0.1 + b1 x 0.2 + b2 x 0.4 + b3 x 0.6 + b4 x 1.4

    4. Charging information:
    Reg_READ0a = 0x70:

    • bit 3 (read only): charging status: 0 = not charging, 1 = charging

    Ref_READ0b = 0x71:

    • bits 7-5 (read only): detailed charging status:
      000 = inactivity
      001 = charging
      010 = constant current charging
      011 = charging with constant voltage
      100 = ??? (missing description in original document)
      101 = end of charging (maintenance current)
    • bit 3 (read only): signal of end of charging (=1)

    5. PIN assignment & control:
    MFP_CTL0 = 0x51:

    • bits 5-4 (read/write): (00 = after reset) pin LIGHT assignement: 00=WLED, 01=GPIO2, 10=VREF
    • bits 3-2 (read/write): (00 = after reset) pin L4 assignement: 00=L4, 01=GPIO1
    • bits 1-0 (read/write): (00 = after reset) pin L3 assignement: 00=L3, 01=GPIO0

    GPIO_CTL2a = 0x53:

    • bits 2-0 (read/write): (000 = after reset) GPIO[2:0] input enable

    GPIO_CTL2b = 0x54:

    • bits 2-0 (read/write): (000 = after reset) GPIO[2:0] output enable

    GPIO_CTL3 = 0x55:

    • bits 2-0 (read/write): (000 = after reset) GPIO[2:0] data

    6. Measurement:
    BATVADC_DAT0 = 0xA2:

    • pins 7-0 (read only): LOW 8 bits (byte) of BATVADC

    BATVADC_DAT1 = 0xA3:

    • pins 5-0 (read only): HIGH 6 bits of BATVADC

    Calculation according to the original document:
    0_1535826835366_BATVADC.png

    BATIADC_DAT0 = 0xA4:

    • pins 7-0 (read only): LOW 8 bits (byte) of BATIADC

    BATIADC_DAT1 = 0xA5:

    • pins 5-0 (read only): HIGH 6 bits of BATIADC

    Calculation according to the original document:
    0_1535825484785_BATIADC.png

    BATOCV_DAT0 = 0xA8:

    • pins 7-0 (read only): LOW 8 bits (byte) of BATOCV

    BATOCV_DAT1 = 0xA9:

    • pins 5-0 (read only): HIGH 6 bits of BATOCV

    Calculation according to the original document:
    0_1535825504468_BATOCVADC.png

    This is true: BATOCV = BATVACD + BATIADC * battery_internal_resistnace

    7. WLED status:
    Reg_READ1 = 0x72:

    • bit 7 (read only): 0 = WLED is off, 1 = WLED is on

    8. Light / heavy load:
    Reg_READ1 = 0x72:

    • bit 6 (read only): 0 = heavy load over 75 mA, 1 = light load less 75 mA

    9. Button control:
    Reg_READ2 = 0x77:

    • bit 3 (read; write 1 = reset) flag button double clicked (=1)
    • bit 1 (read; write 1 = reset) flag button pressed (=1)
    • bit 0 (read; write 1 = reset) flag button clicked (=1)

    That is all.



  • @jikuch Nice design.
    Do you have the I2C register document of IP5108? Could you share it? Thanks!


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